2012, America's, American, Bill & Melinda Gates Foundation, Bill Gates, Bill and Melinda Gates Foundation, Emerald city, Headquarters, Lifestyle, Melinda Gates, Microsoft, NBBJ Architects, North America, North American, Northwest, Seattle, U.S.A., USA, Warren Buffett, Washington State, West coast, aid, architecture, built green, campus, cities, city, communities, community, copy space, copyspace, cosmopolitan, destination, destinations, developing countries, environment, exploring, fortune, fortunes, foundations, grantmaking. Foundation, green, greenest, horizontal, image, images, largest, leadership, living, metropolis, metropolitan, milieu, most livable, new, non profit, non-profit, philanthropic, philanthropy, photograph, photographs, photography, picture, pictures, romance, romantic, stock, stock photography, sustainable, urban, urban center, vacation, vacations, way of life, work, world health, Space Needle